摘要:
An efficient method for the preparation of key intermediate, in the synthesis of (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one, a reverse transcriptase inhibitor is achieved using a chiral addition reaction to the 4-chloro-2-trifluoromethylketoaniline with an organozinc complex to give the desired alcohol. This instant method has broad applicability in the chiral addition to any prochiral ketone.
摘要:
An efficient method for the preparation of key intermediate, in the synthesis of (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one, a reverse transcriptase inhibitor is achieved using a chiral addition reaction to the 4-chloro-2-trifluoromethylketoaniline with an organozinc complex to give the desired alcohol. This instant method has broad applicability in the chiral addition to any prochiral ketone.
摘要:
A process for enhancing the purity of 2R-[1-hydroxy- 1-trifluoromethyl- 3-cyclopropylpropyn-2-yl] -4-chloroaniline comprising the formation of an acid addition salt which is capable of rejecting the racemate in the selected organic solvent.
摘要:
A process for enhancing the purity of 2R-[1-hydroxy- 1-trifluoromethyl- 3-cyclopropylpropyn-2-yl] -4-chloroaniline comprising the formation of an acid addition salt which is capable of rejecting the racemate in the selected organic solvent.
摘要:
An efficient method for the quantitative preparation and isolation of a compound of formula (I) or its enantiomer, a chiral mediator used in enantioselective synthesis.